X9448 Datasheet, PDF (15/19 Pages) Xicor Inc. – Mixed Signal with 2-Wire Interface

X9448
BASIC APPLICATION (continued)
Programmable Oscillator with Memory
SCL
SDA
V_H
R
V_L V_W
C
Frequency µ R, C
Duty Cycle µ R₁, R₂, R₃
+5V
V+
–
+
V–
9448
V_OUT
R₂
+5V
R₃
R₁
Programmable Schmitt Trigger with Memory
V_UL
=
R_{-----1-----+----}R_-----2-
R₂
V_W
–
R_-----1-
R₂
V_OUT
(
m
i
n)
V_LL
=
R_{-----1-----+----}R_-----2-
R₂
V_W
–
R_-----1-
R₂
V_O
U
T
(
m
a
x
)
V_R
V_H
R
V_W
V_L
V_S
R₁
9448
– ^V+
+
V–
R₂
V_OUT
V_OUT
V_S
V_LL
V_UL
15
FN8201.0
April 18, 2005